46 Matching questions
- A fixture in a class III location that may be exposed to physical damage shall be protected by a _____ guard.
Article 503.130(B) Luminaries, divisions 1 & 2 pg 393
cable trays shall not be used as equipment grounding conductors for
circuits with ground fault protection above _____ amperes.
In 2008, Article 392.3(C)and 392.7(b) and Table 392.7(B) note b
In 2011 Article 392.60(A) note b pg. 244
electrode type boilers, each boiler shall be designed so that in normal
operation there is no change in state of the heat transfer medium, and
shall be equipped with a temperature sensitive ________.
a. protective device
b. limiting means
c. shut off device
d. all of these
Article 424.83 Overtemperature limit control pg. 302
- IN a Class II location, where electrically conducting dust is present, flexible connections can be made with _________
a. flexible metal conduit
b. Type AC armored cable
c. flexible cord listed hard usage
d. liquidtight flexible metal conduit with listed fittings.
Article 502.10 (A)(2)(2)Flexible connections pg. 386
installing underground rigid non metallic conduit and other approved
nonmetallic raceways under a building, it must have a minimum of _____
inches of cover.
Article 300.5, Table 300.5 Col 3 Minimum Cover Requirements, pg. 138
- Class 1 control circuit conductors shall have over current protection _____________________
a. for No. 14 AWG and larger
b. not exceeding 7 amperes for No. 18 AWG and 10 amperes for No. 16 AWG
c. and derating factors do not apply
d. a, b and c
Article 725.43 Class 1 Circuit Overcurrent Protection pg. 642
marking at the terminals during the process of installation shall
identify the grounded conductors of _______ metal sheathed cable.
b. mineral insulated
Article 200.6(A)(5)(2011)or (1) 2008 Means of Idenifying grounded conductors.
- A single receptacle installed on an individual branch circuit must be rated at least _____ percent of the rating of the circuit.
Article 210.21(B)(1)Single Recept. on Indiv. branch Circuit pg. 54
connection between a grounded conductor and the equipment grounding
conductor at the service is accomplished with the use of a _________.
a. main bonding jumper sized per 250.66
b. system bonding jumper sized per 250.66
c. equipment bonding conductor sized per 250.122
d. main bonding jumper sized per 250.122
Article 100 Definitions (pg 26)and Article 250 grounding and bonding pg 115
electric space heating equipment requiring supply conductors with
insulation rated over ____ degrees Centigrade shall be clearly marked.
d. a,b, and c
Article 424.11 supply conductors, pg 296
nonflammable synthetic insulating media known as ____________, which
under arcing conditions, the gasses produced, while consisting
predominantly of noncombustible hydrogen chloride, can include varying
amounts of combustible gasses.
a. Mineral Oil
b. Poly Chlorinated Bi-Phenol
Article 100, Definitions pg. 26
- Type MV is defined as a single or multiconductor solid dielectric insulated cable rated _________volts or higher.
Article 328.2 Medium Voltage Cable Type MV pg. 192
- All wiring shall be installed so that the completed system will be free from ______
a. short circuits
b. ground faults
c. a and b
Article 110.7 Wiring integrity pg. 35
- The NEC permits lighting fixture tap conductors to be a minimum of ____ inches long.
Article 410.117(C) Tap conductors pg. 286
penetrations requiring Types CMR communication cable shall contain only
cables suitable for riser or plenum use. Listed communication cables
shall be ______.
a. encased in a metal raceway
b. located in a fireproof shaft with firestops at each floor
c. a or b
d. none of these.
Article 800.110 Raceways for communications wires adnd cables. pg. 675
- The metallic sheath of communications cables entering buildings shall be _______.
a. grounded at the point of emergence through an exterior wall
b. grounded at the point of emergence through a concrete floor slab
c. interrupted as close to the point of entrance as practicable by an insulating joint.
d. a, b, and c.
Articles 800.93(A) Grounding or interruption of metallic sheath members of communication cables (pg, 673) and Article 800.2 definitions, pg. 670
rating or setting of an overcurrent protection device for a 16.3 ampere
single non motor operated appliance should not exceed _______ amperes.
Article 422.11(E)(3) Single non motor operated appliance, pg. 291
size THHN conductor is required for a 50 ampere circuit if the
equipment terminals are listed for 75 degrees Centigrade conductor
sizing? Reference Table 310.16
a. 10 AWG copper
b. 8 AWG copper
c. 6 AWG copper
d. 4 AWG copper
Article 110.14(C)(1)Temperature limitations, equipment provisions.. pg. 36 also table 310-15 (2011)pg. 154
- Lampholders installed over highly combustible material shall be of the ________ type.
Article 410.12 Luminaries over Combustible material pg. 281
- It shall be permitted to base the ____ rating of a range receptacle on a single range demand load specified in Table 220.55.
Article 210.21(B)(4) Receptacles, pg. 54
- Equipment is required to be installed and used according to any instructions included in the __________
a. listed or published
b. labeled or design
c. listing or labeling
d. a, b, and c.
Article 110.3(B) Installation and Use pg. 35
for an appliance circuit supplying more than one appliance receptacle
in an installation operating at less than 50 volts shall not be smaller
than No. _____copper or equivalent.
a. 18 AWG
b. 14 AWG
c. 12 AWG
d. 10 AWG
Article 720.4 Conductors, pg 640
Lighting Unit Equipment (battery pack) shall be on the same branch
circuit as that serving the normal lighting in the area and connected
_______of any local switches.
d. none of these
Article 700.12(F)sources of power, Unit Equipment pg. 625
TPT and TST cord shall be permitted in lengths not exceeding ___ feet
when attached directly, or by means of a special type of plug, to a
portable appliance rated 50 watts or less and of such nature that
extreme flexibility of the cord is essential.
Article 400.4, Table 400.4 note 4(Thermoplastic) pg. 257
branch circuits that supply 120 volt, single phase, 15 and 20 ampere
branch circuits supplying outlets installed in dwelling unit family
rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms,
sunrooms, recreation rooms, closets, hallways or similar rooms or areas
shall be _____ protected.
a. AFCI(Arc Fault Circuit Interrupter)
c. a and b
Article 210.12(B) and (A) Branch circuit extensions or modifications- dwelling units. pg. 52
a dwelling unit, receptacle spacing, shall be installed as such that no
point measured horizontally along the floor line in any wall space may
be more than _____ feet from a receptacle outlet.
Article 210.52(A)(1) Spacing pg. 56
exposed non current carrying metal parts of cranes, monorail hoists,
hoists and accessories, including pendant controls shall_______, where
applicable, so that the entire crane or hoist is a ground fault path as
required or permitted by Article 250, Parts V and VII.
a. be bonded with No. 6 AWG or larger conductors
b. be bonded either by mechanical connections or bonding jumpers
c. be grounded
d. not be grounded
Article 610.61 Grounding pg. 532
- No ______ shall be attached to any terminal or lead so as to reverse designed polarity.
a. grounded conductor
b. grounding conductor
c. ungrounded conductor
d. grounding connector
Article 200.11 Polarity of Connections pg. 48
equipment that depends on the _____ principals for cooling of exposed
surfaces shall be installed so that room airflow over such surfaces is
not prevented by walls or adjacent installed equipment.
b. natural circulation of air and convection
c. artificial cooling and circulation
d. air conditioning
Article 110.13(B) Cooling, pg. 35
buried conductors or cables shall be ______, providing those splices
are made with approved methods and identified materials.
a. permitted to be spliced without a splice box.
b. spliced only in an approved junction box.
c. spliced only in a weatherproof splice box
d. none of these.
Article 300.5(E) Splices and Taps, pg. 139
Fault Circuit Interrupter (GFCI) protection for personnel is required
for all 125 volt, single phase, 15 and 20 ampere receptacles installed
in a dwelling unit _____.
c. crawl spaces above grade level
d. a, b and c
Article 210.8(A)(2) Dwelling Units pg. 50
- Types of pipeline resistive heaters are heating _______
d. A and B
Article 427.2 Definitions, resistance heating element pg. 307
minimum thickness of sealing compound in Class 1, Division 1 and 2
locations shall not be less than the trade size of the sealing fitting,
and in no case less than _____ inches.
Article 501.15(C) 3 pg 379
locations are classified depending on the properties of the ______,
that may be present, and the likelihood that a flammable or combustible
concentration or quantity is present.
a. flammable gas
b. flammable liquid produced vapor
c. combustible dusts or fibers/flyings
d. a,b,and c
Article 500.5(A) Classifications of locations pg. 369
bare or covered conductors are installed with insulated conductors, the
temperature rating of the bare or covered conductor shall be _________
a. 60 degrees C
b. greater than the lowest temperature rating of the insulated conductors for the purpose of determining ampacity.
c. 90 degrees C
d. equal to the lowest temperature rating of the insulated conductors for the purpose of determining ampacity.
Article 310.15(B)(4) Bare or Covered Conductors, pg. 152
over current protective devices, the total impedance, the component
short circuit _____ ratings, and other characteristics of the circuit to
be protected shall be selected and coordinated to permit the circuit
protective devices used to clear a fault to do so without extensive
damage to the electrical components of the circuit.
Article 110.10 pg. 35
that supply signs and outline lighting systems containing incandescent
and fluorescent forms of illumination shall be rated not to exceed ____
Article 600.5(B)(2)Electric signs and outline lighting, pg. 519
the load is calculated on the basis of volt amperes per square foot,
the load shall be evenly proportioned among multioutlet branch circuits
within the ___________.
b. branch circuits
d. dwelling unit
Article 210.11(B)Load evenly proportioned among branch circuits pg. 51
circuits rated 15 or 20 amperes can supply fixed appliances(utilization
equipment fastened in place) as long as the fixed appliances do not
exceed _____ percent of the circuit rating.
Article 210.23(A) (2) Utilization equipment fastened in place pg. 54
outdoor antenna of a receiving station with a 75 foot span using a
copper clad steel conductor shall not be less than No. ______.
a. 10 AWG
b. 12 AWG
c. 14 AWG
d. 17 AWG
Article 810.16(A) Size of Antenna Conductors, pg. 683
connected to a branch circuit supplying _____ or more receptacles or
outlets, a receptacle shall not supply a total cord and plug connected
load in excess of the maximum specified in Table 210.21(B)(2).
Article 210.21(B)(2)Total cord and plug connected load pg. 54
in sizes smaller than 1/0 AWG shall be permitted to be run in parallel
to supply indicating instruments, contactors, relays, solenoids, and
similar control devices, or for frequencies of 360 HZ or higher,
provided which of the following apply:
a. They are contained within the same raceway or cable
b. The ampacity of each individual conductor is sufficient to carry the entire load current shared by the parallel conductors.
c. The overcurrent protection is such that the ampacity of each individual conductor will not be exceeded if one or more of the parallel conductors become inadvertently disconnected.
d. all of the above
Article 310.1(H) exception 1 pg 148
maximum allowable horse power rating of a permanently connected
appliance where the branch circuit protection device is used as the
appliance disconnecting means is _____ horsepower.
Article 422.31(A)Disconnection of Permanently connected devices, pg. 293
neutral conductor of a 3 wire branch circuit supplying a household
electric range shall be permitted to be smaller than the ungrounded
conductors where the maximum demand of a range of 8 3/4 KW or more has
been calculated according to Column C of Table 220.55. However, the
neutral ampacity shall not be less than ______ percent of the branch
circuit rating, and not smaller than No. _____
a. 50 and 6
b. 70 and 6
c. 50 and 10
d. 70 and 10.
Article 210.19(A)(3) Exception 2 Household Ranges and cooking appliances, pg. 53
a commercial major repair garage, the pit area in lubrication or
service rooms, below grade, shall be classified as a
_______________location that extends up to the floor level, unless
provisions are made for mechanical ventilation providing a minimum of
six air changes per hour, which is a __________________location
a. Class 1. Division 2 and Class I Division 1
b. Class II. Division 2 and Class Division 1
c. Class II Division 1. and Class II Division 2
d. Class I Division I and Class I Division 2
Article 511.3(C)(3)(a)and(b)Pit areas in Lubrication or service Room, pg. 420
- Open wiring on insulators within _____ feet from the floor shall be considered exposed to physical damage.
Article 398.15(C)Exposed to physical damage pg. 249
- a 60
- b a and b
- c a, b and c
- d ampere
- e all of the above
- f unswitched
- g garages
- h 8 AWG copper
- i limiting means
- j 5/8
- k liquid tight flexible metal conduit with listed fittings
- l be bonded by either mechanical connections or bonding jumpers
- m 6
- n 20
- o 50
- p main bonding jumper sized per 250.66
- q 1/8
- r 2000 amps
- s 18
- t natural circulation of air and convection
- u a b and c
- v 7
- w 70 and 10
- x 0
- y grounded conductor
- z 8
- aa Class I Division 1 and Class I Division 2
- ab listing or labeling
- ac 2001
- ad equal to the lowest temp of other conductors
- ae 17 AWG
- af Askarel
- ag a, b, and c
- ah 100
- ai suitable
- aj 25
- ak current
- al AFCI
- am A and B
- an two
- ao 10 AWG
- ap ahead
- aq a or b
- ar mineral insulated
- as permitted to be spliced without a splice box
- at panelboard(s)